Propeller shaft and boot protection member of propeller shaft
AssigneeHitachi Astemo, Ltd.
InventorsTatsuya Shimoda, Byung Goo Park
Life of this patent
Estimating the term…
Abstract
A propeller shaft PS is provided with a boot protection member 5. The boot protection member 5 is detachable to a first rotation member 1. In this configuration, when the angle variation of a constant velocity joint 3 becomes large, an insertion portion 57 of the boot protection member 5 is interposed between a first cover part 41 and a second cover part 42. Consequently, the interference of the first cover part 41 with the second cover part 42 is suppressed, thereby suppressing the damage of the second cover part 42.
Claims12
A boot protection member of a propeller shaft which is configured to protect a boot member used for the propeller shaft in which a first rotation member and a second rotation member are connected to each other via a constant velocity joint, and is detachable to the first rotation member, wherein the constant velocity joint includes:
- an inner ring member connected to the first rotation member;
- and an outer ring member which is connected to the second rotation member and to which a rotation of the second ring member is transmitted via a rolling element disposed on an outer peripheral side of the inner ring member, and wherein the boot member includes:
- a first cover part having a first end portion extending in a direction approaching the first rotation member in an axial direction along a rotation axial line of the first rotation member and a second end portion fixed to an outer peripheral side of the outer ring member;
- and a second cover part having a first end portion disposed on an inner peripheral side of the outer ring member while being folded back from the first cover part and a second end portion fixed to the first rotation member, the boot protection member comprising:
- a cylindrical portion surrounding an outer periphery of the first rotation member;
- an insertion portion which is inserted between the first cover part and the second cover part in the cylindrical portion;
- a plurality of projection portions projecting to an outer peripheral side of the cylindrical portion in a radial direction orthogonal to the rotation axial line;
- a cut part provided on an opposite side of the plurality of the projection portions with the rotation axial line therebetween in the cylindrical portion;
- a slit portion which is provided between the plurality of the projection portions in a circumferential direction of the rotation axial line, and penetrates the boot protection member in the axial direction;
- and
- an opening portion provided between the plurality of projection portions, the slit portion communicating with an outside via the opening portion.
A propeller shaft used for an automobile, comprising:
- a first rotation member;
- a second rotation member to which a rotation of the first rotation member is transmitted;
- a constant velocity joint which is provided between the first rotation member and the second rotation member in an axial direction along a rotation axial line of the first rotation member, and includes:
- an inner ring member connected to the first rotation member;
- and
- an outer ring member which is connected to the second rotation member and to which the rotation is transmitted via a rolling element disposed on an outer peripheral side of the inner ring member;
- a boot member which is provided between the first rotation member and the outer ring member, and includes:
- a first cover part having a first end portion extending in a direction approaching the first rotation member in the axial direction and a second end portion fixed to an outer peripheral side of the outer ring member;
- and
- a second cover part having a first end portion disposed on an inner peripheral side of the outer ring member while being folded back from the first cover part in the axial direction and a second end portion fixed to the first rotation member;
- and
- a boot protection member which is configured to protect the boot member, is detachable to the first rotation member, and includes:
- a cylindrical portion surrounding an outer periphery of the first rotation member;
- an insertion portion which is inserted between the first cover part and the second cover part in the cylindrical portion;
- a plurality of projection portions projecting to an outer peripheral side of the cylindrical portion in a radial direction orthogonal to the rotation axial line;
- a cut part provided on an opposite side of the plurality of the projection portions with the rotation axial line therebetween in the cylindrical portion;
- and
- a slit portion which is provided between the plurality of the projection portions in a circumferential direction of the rotation axial line, and penetrates the boot protection member in the axial direction.
Dependencies are inferred from the claim text.